Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf305c7ce7b58a55…

MALICIOUS

PDF

46.2 KB Created: 2021-05-19 05:24:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 235957994b18db5fc1c3b896bb7c2ab8 SHA-1: aebf87b0ae2250b32b6b15fa689a0f682a6fd32a SHA-256: bf305c7ce7b58a558ab02043b30b26545f656e7767fa9dfe5f8666e65fa343a9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/coin-master-codes-game-hack PDF link annotation
    • http://safari-crimea.com/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/tiktok-free-hit_GM835599320.pdfIn PDF document text
    • http://safari-crimea.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://safari-crimea.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://safari-crimea.com/images/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://safari-crimea.com/images/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a5b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A5B 29952 bytes
SHA-256: 09114a43ec67b61348f73a0ed6252152e500781c64291920b783499a669bc0a3
font_01_sfnt_off000089f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F3 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off00009394.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9394 17720 bytes
SHA-256: e3dc30cd69473f08b9483bb660e9aeaccc8f6f74c3e4f353697525059d592d8d

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